you have to understand the environment you are intervening in. that is a different kind of engagement than what we are undertaking today. >> thank you. we have started a twitter account. we have a question from that account. "what is the likelihood drones could be preprogrammed to deliver a weapon without having humans directly involved in the attack?" >> i am not aware of any plan by the u.s. air force or any of the other military agencies that are building drones to have them be automated, flying killing robots from "terminator 2." there is a very strong emphasis on preserving the war fighter making the decision. having pilot in the drone. if we got down the road towards automation, i think we would have a major legal problem, but also something we should stay away from. >> it raises an interesting technological question. every lawyer i have talked to about this said the same thing. the days of hiring a hit man, but you have your own personal drone do it for you, is not that far away. it is not science fiction anymore. how you prevent that, i h